15404220064 has 48 divisors (see below), whose sum is σ = 32978910888. Its totient is φ = 7053115392.

The previous prime is 15404220043. The next prime is 15404220089. The reversal of 15404220064 is 46002240451.

15404220064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 15008210064 + 396010000 = 122508^2 + 19900^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362529 + ... + 402784.

Almost surely, 2^15404220064 is an apocalyptic number.

It is an amenable number.

15404220064 is an abundant number, since it is smaller than the sum of its proper divisors (17574690824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15404220064 is a wasteful number, since it uses less digits than its factorization.

15404220064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765377 (or 765369 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The spelling of 15404220064 in words is "fifteen billion, four hundred four million, two hundred twenty thousand, sixty-four".